Abstract To utilize the full solar spectrum, photonic crystal (PC) films were constructed along with CdS and Graphene Oxide (GO) nanosheets to realize photothermal synergetic catalysis. The photonic band gap (PBG) effect of PC films could enhance the absorption of near-infrared light by GO. A microreactor was introduced as the platform for photocatalysis owing to its fast mass transfer and preeminent heat-localization effect. Tetracycline, as an antibiotic widely existed in waste water, was chosen as the degradation goal of photocatalysis tests. Compared with the pure CdS film, the CdS/GO/polystyrene PC film gains a 18.3 °C temperature rise and a 57.8% photocatalytic performance promotion, indicating the effectiveness of photothermal catalysis. Moreover, the CGPC film sealed in the microreactor exhibits a 33.0 °C temperature increase and a 4.5-fold photocatalytic efficiency grow against a same film in the bulk reactor, corroborating the great mass transfer and the preeminent heat-localization effect of the microreactor. Temperature distributions in the microreactor and the bulk reactor were simulated by computational simulations to corroborate aforementioned conclusions. In conclusion, photonic crystal and microreactor enhanced photothermal catalysis provides a feasible method for water treatment.

中文翻译：

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光子晶体和微反应器实现光热效应增强光催化

摘要 为了利用全太阳光谱，光子晶体 (PC) 薄膜与 CdS 和氧化石墨烯 (GO) 纳米片一起构建以实现光热协同催化。PC薄膜的光子带隙（PBG）效应可以增强GO对近红外光的吸收。由于其快速的传质和卓越的热定位效应，微反应器被引入作为光催化平台。四环素作为一种广泛存在于废水中的抗生素，被选为光催化试验的降解目标。与纯 CdS 薄膜相比，CdS/GO/聚苯乙烯 PC 薄膜获得了 18.3 ℃的温升和 57.8% 的光催化性能提升，表明光热催化的有效性。此外，密封在微反应器中的 CGPC 膜表现出 33.0 °C 的温度升高和 4. 在本体反应器中，同一薄膜的光催化效率提高了 5 倍，证实了微反应器的巨大传质和卓越的热定位效应。通过计算模拟来模拟微反应器和本体反应器中的温度分布以证实上述结论。总之，光子晶体和微反应器增强的光热催化为水处理提供了一种可行的方法。